Observation and branching fraction measurements of $J/\psi \to p\bar{p}{K}_S^0{K}_S^0$ and $\psi (3686)\to p\bar{p}{K}_S^0{K}_S^0$

BESIII Collaboration, M. Ablikim, M. N. Achasov +765

Using $(10.087\pm 0.044)\times 10^9$ $J/\psi$ events and $(2.712\pm 0.014)\times 10^9$ $\psi (3686)$ events collected by the BESIII detector operating at the BEPCII collider, we report the fi…